Puddling and heating furnace



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Patented April 12,1881. -JI E', l.

V. S. BLOOMHALL. Puddlng and- Heating Rurnaoe.

(No Model.)

Am w UNITED STATES PATENT OFFICE.

VINCENT S. BLOOMHALI, OF CONSHOHOCKEN,PENNSYLVANIA.

PUDDLING AND HEATING FURNACE.

SPECIFICATION forming part of Letters Patent No. 240,081, dated April 12, 1881.

Application filed March 12, 1880.

To all whom it may concern Be it known that I, VINCENT S. BLooM- HALL, a citizen of the United States, residing in Conshohocken, Pennsylvania, have invented certain Improvements in Puddling and Heating Furnaces, of which the following is a specilication.

My invention relates to combined furnaces and elevated boilers in which steam is generated by the waste part of the furnaces; and my invention consists in combining the elevated plates which carry the boiler and the brick-work appertaining to the same, with flattened pipes placed on the plates within the flue beneath the boiler, so that :t plentiful supply of heated air for use in connection with the furnace may be obtained, and so that the pipes may diminish the heat and add to the comfort of the operatives on the iioor below.

In the accompanying drawings, Fig. l is a side view of a paddling-furnace and steamboiler, the iues, air-heating pipes, and chimney being in section; Fig. 2, a sectional plan on the line l 2; Fig. 3, a transverse section on the line'3 4; Fig. 4, the same showing a modified arrangement ot' air-heating pipes, and Fig. 5 a perspective view of a section of the air-heating pipes.

A is an ordinary puddling-furnace, and B a steam-boiler mounted in suitable brick-work, which is built on cast-iron plates w, the whole being supported by columns E, this combination of a paddling or heating furnace with a steam-boiler being commonly adopted in rolling-mills. f Y

The vertical iiue G, at the rear end of the furnace, communicates with the chimney H' heating the air without seriously detracting (No model.)

from the Steamgenerating properties of the said waste products. In order to obviate this difficulty, I place on the plates w, which form the bottom of the horizontal lue I, air-pipes K K', which I prefer to make of sheet-iron or terra-cotta, and in sections (Fig. 5) titted together. Air is admitted to the pipe K at n, and, after traversing this pipe, passes through the branch m into the pipe K', from which it is discharged through the outlet p. Two additional pipes may be arranged, one on each side ofthe liuc I, close to the brick-work, as shown in Fig, 4, but these are not essential to my invention. The pipes are flattened and placed directly on the plates to, for two'reasons: rst, because they may not materially lessen the depth of the flue of a combined furnace and boiler which has already been ereeted; and, second, because they cover, or nearly cover, the plates, and maintain the same at a comparatively low temperature. so as to prevent that radiation of heat which is so oppressive to the operatives on the floor below when the upper surface of the plates is eX- posed to the action of the waste products of combustion.

As before remarked, the structure to which my invention is applied has long been in use in rolling-mills. Air-heating passages have also been formed below the lower flue of a steam-boiler, and blasts of air have been introduced into such lower ues, hence I'lay n o broad claim to any of these features; but

I claim as my invention- The combination, in a combined paddling or heating furnace and elevated boiler, of the plates zo, on which the boiler and brick-work are mounted, with flattened Iair-heating pipes placed directly on the said plates, forming the bottom of the flue I beneath the boiler, and having inlet and discharge branches, whereby air is caused to circulate through said flattened pipes, all substantially as set forth.

In testimony whereofl have signed my name to this specification in the presence of two subscribing witnesses. l

VINCENT S. BLQOMHALL.

Witnesses:

JAMES F. ToBIN, HENRY HowsoN, Jr. 

